Using Podman with SSH Agent on Git Bash for Windows 10?

[Alexhuszagh]

Currently, if I'm using Windows with an SSH agent on Git Bash for Windows, so SSH_AUTH_SOCK is set, I get the following response:

$ podman machine start
Starting machine "podman-machine-default"
...
$ podman ps -a
CONTAINER ID  IMAGE       COMMAND     CREATED     STATUS      PORTS       NAMES
$ ssh-add ~/.ssh/privkey
Identity added: /c/Users/ahusz/.ssh/privkey
$ podman ps -a
Cannot connect to Podman. Please verify your connection to the Linux system using `podman system connection list`, or try `podman machine init` and `podman machine start` to manage a new Linux VM
Error: unable to connect to Podman. failed to create sshClient: dial unix C:/Users/ahusz/AppData/Local/Temp/ssh-DsDQpcKVCMdB/agent.1783: connect: No connection could be made because the target machine actively refused it.
$ unset SSH_AUTH_SOCK
$ podman ps -a
CONTAINER ID  IMAGE       COMMAND     CREATED     STATUS      PORTS       NAMES

I am currently using Podman version 4.1.0 for Windows 10 (not within WSL2, but using the WSL2 backend, as always), with the SSH agent from git bash for Windows (git version 2.37.3.windows.1). This only occurs after I've added a key to the SSH agent. The order of adding keys and starting the machine does not matter.

Note that this does not happen if I use OpenSSH for Windows on Powershell (no git bash):

> py -3.9 -c "import shutil; print(shutil.which('ssh-agent'))"
C:\WINDOWS\System32\OpenSSH\ssh-agent.EXE
> podman machine start
> podman ps -a
CONTAINER ID  IMAGE       COMMAND     CREATED     STATUS      PORTS       NAMES
> ssh-add C:\Users\ahusz\.ssh\privkey
Identity added: C:\Users\ahusz\.ssh\privkey (C:\Users\ahusz\.ssh\privkey)
> podman ps -a
CONTAINER ID  IMAGE       COMMAND     CREATED     STATUS      PORTS       NAMES

Any help would be greatly appreciated.